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A Fibre Channel switch has eight ports and all ports must be operational from 6 AM to 6 PM, Monday through Friday. However, a failure of Port 4 occurs with the week as follows: Monday= 11 AM to 1 PM Wednesday= 5 PM to 10 PM Thursday= 7 AM to 10 AM Saturday= 11 AM to 1 PM What is the availability of Port 4 in that week?
Correct Answer: B
Explanation To calculate availability, you need to calculate the total number of hours that the port is operational and divide it by the total number of hours in the week, which is 168. The total number of hours that Port 4 is operational in that week is 106.7, so the availability is 106.7/168 = 86.7%.